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Poster Open Access

Finding a second Sun - How can we detect solar-like magnetic cycles with Zeeman-Doppler-Imaging (ZDI)?

Lehmann, Lisa Theres; Hussain, Gaitee A. J.; Vidotto, Aline A.; Jardine, Moira M.; Mackay, Duncan H.

Editor(s)
Wolk, Scott

Spectropolarimetric surveys have now been running for long enough to reveal solar-like magnetic activity cycles, e.g., for 61 Cyg A (Boko Saikia et al. 2018). Our work examines if a solar-like cycle can be observed with ZDI, given that this technique only detects the large-scale field for very slowly-rotating and low-activity stars like our Sun. We aim to determine the best strategy to detect stellar cycles, and which parameters are most sensitive to cycle changes.

This poster presents our paper: Lehmann, L. T., et al., 2021, MNRAS, 500, 1243
(https://ui.adsabs.harvard.edu/abs/2021MNRAS.500.1243L)

 

LTL acknowledges support from the Scottish Universities Physics Alliance (SUPA) prize studentship and the University of St Andrews Higgs studentship. LTL and GH would like to thank the ESO Directorate for Science, which provided funds to support this collaboration. GH also warmly thanks the IDEX initiative at Université Federale Toulouse Midi-Pyrenees (UFTMiP) for funding the STEPS collaboration program between IRAP/OMP and ESO.
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  • Boro Saikia S., et al., 2018, A&A, 620, L11

  • Lehmann L. T., Hussain G. A. J., Jardine M. M., Mackay D. H., Vidotto A. A., 2019, MNRAS, 483, 5246

  • Yeates A. R., Mackay D. H., 2012, ApJ, 753, L34

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Publication date:
February 25, 2021
DOI:
10.5281/zenodo.4562464

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Keyword(s):
The Sun and the Heliosphere Cool Stars on the main sequence
Grants:
European Commission:
  • NewWorlds - Magnetic Fields and the Formation of New Worlds (740651)
  • ASTROFLOW - The influence of stellar outflows on exoplanetary mass loss (817540)
  • WHOLE SUN - The Whole Sun Project: Untangling the complex physical mechanisms behind our eruptive star and its twins (810218)
Research Councils UK:
  • Astronomy at St Andrews 2015-2018 (ST/M001296/1)
Meeting:
The 20.5th Cambridge Workshop On Cool Stars, Stellar Systems, and the Sun (CS20.5), virtually anywhere, March 2-4, 2021
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License (for files):
Creative Commons Attribution 4.0 International

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